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Question : 156 of 160
Marks:
+1,
-0
Solution:
I=‌ I=‌‌dx . . . (i)
I=‌| cos3(−x) |
| sin‌3(‌−x)+cos3(‌−x) |
‌dx I=‌‌dx . . . (ii)
On adding Eqs. (i) and (ii), we get
2I‌=‌| sin‌3x+cos3x |
| sin‌3x+cos3x |
‌dx‌=1‌dx=‌⇒I‌=‌
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